function setCookie(name,value)

{

var Days = 30;

var exp = new Date();

exp.setTime(exp.getTime() + Days*24*60*60*1000);

document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();

}

// 读取cookies

function getCookie(name)

{

var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");

if(arr=document.cookie.match(reg))

return unescape(arr[2]);

else

return null;

}

 

// 删除cookies

function delCookie(name)

{

var exp = new Date();

exp.setTime(exp.getTime() - 1);

var cval=getCookie(name);

if(cval!=null)

document.cookie= name + "="+cval+";expires="+exp.toGMTString();

}

function getQueryStringRegExp(name) {
    var reg = new RegExp("(^|\\?|&)" + name + "=([^&]*)(\\s|&|$)", "i");
    if (reg.test(location.href)) return unescape(RegExp.$2.replace(/\+/g, " "));
    return "";
}